EP 0092895 A2 19831102 - Data processing system.
Title (en)
Data processing system.
Title (de)
Datenverarbeitungsanlage.
Title (fr)
Système de traitement de données.
Publication
Application
Priority
GB 8212262 A 19820428
Abstract (en)
A data processing system comprising multiple processing nodes (10) each containing a processor (14) and a data store (15). The store holds local data, and also holds copies of shared data required by the node. This reduces conflict between the nodes in accessing the shared data. When one node updates the shared data, it sends an update message to all the other nodes over a transmission link (11). The processor is then free to continue processing. When the message reaches the other nodes, it updates the other copies of the shared data, so as to ensure consistency. Each node receives messages from the link in the same order, and this defines a unique chronological order for the updates, even though the nodes are asynchronous. A node is temporarily suspended if an update occurs out of this correct chronological order.
IPC 1-7
IPC 8 full level
G06F 15/16 (2006.01); G06F 12/00 (2006.01); G06F 12/06 (2006.01); G06F 15/173 (2006.01); G06F 15/177 (2006.01)
CPC (source: EP US)
G06F 15/17337 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0092895 A2 19831102; EP 0092895 A3 19860212; EP 0092895 B1 19880511; AU 1399883 A 19831103; AU 554263 B2 19860814; DE 3376590 D1 19880616; JP H0230536 B2 19900706; JP S58192160 A 19831109; US 4562539 A 19851231; ZA 831058 B 19831130
DOCDB simple family (application)
EP 83300516 A 19830202; AU 1399883 A 19830427; DE 3376590 T 19830202; JP 3302183 A 19830302; US 46738483 A 19830217; ZA 831058 A 19830216